Light bars are the workhorse. A straight or curved LED bar mounted on the roof line or above the windshield throws the long, wide beam you want for trail speed at night. Sizing is about the machine, not ego: a 20–22" bar suits a narrow 60" RZR or a Ranger; 30–40" bars fit wide-body XP and Pro machines but need a roof or a stout above-windshield mount. Single-row bars are lower-profile and cut wind noise; dual-row bars throw more raw light but stick up higher.
Cube and pod lights are small, aimable LED squares that flush- or bracket-mount on the A-pillars, bumper, or fenders. They're the best value in UTV lighting: a pair of flood pods on the A-pillars lights up the ground beside you in corners — exactly where a roof bar can't reach — and they're cheap to replace if a rock finds one.
Rock lights mount under the machine and light the ground and tires. On a UTV they're mostly night-crawling and show lighting (many are RGB and app-controlled), but they genuinely help on slow, technical rock where you need to see where a tire is about to place.
Whips are the lighted safety flags — a flexible LED whip on the rear cage so dune riders and other machines can see you cresting a hill. In many riding areas a whip of a required height is mandatory. They're a safety item first and a light show second.